I have the full licensed Matlab 2014b, and I have done many similar projects, where by I developed libraries for .Net or C++, or I converted the Matlab toolboxes ( i.e Image processing, Neural network, and Simulink models,...) to C, C++ code, DLL, or even HDL and VHDL code.
I will first start with converting and delivering a few functions from Neural Network Toolbox as samples, for both 32 and 64 bits platforms, including the help and comments for the code. Once the samples are delivered, they can be tested by you. If you are happy with their form and setting I will proceed with the rest.
The whole conversion should not take more than a week.